There's not long now until the Comedy Central Roast of Charlie Sheentorpedos its way onto our screens, and E! News has exclusively learned which stars have signed on as the latest additions to this insultathon.

None other than TV legend and previous roastee William Shatner is leading the way, and he'll be joined on the dais by Private Practice's Kate Walsh, Jon Lovitz and comedians Patrice O'Neal and Amy Schumer.

As if that weren't enough, Slash will also be making a special appearance at the roast, which will be emceed by Roast Master Seth MacFarlane.

So fingers on those bleep buttons, censors. You've been warned.

Two high-profile names who haven't RSVP'd to publicly lambast their exes (though not for lack of temptation, we're sure) are his ex-wives Brooke Mueller and Denise Richards (both of whom recently helped Sheen celebrate his birthday).

A source tells E! News that efforts were made to book the duo, but that both declined and that, as of right now, at least, neither will be present for the taping. Perhaps they don't want to rock the finally steady boat?

In any case, the new roasters will join previously announced insult-hurlers Jeffrey Ross, Steve-O, Anthony Jeselnik and, of course, Mike Tyson.

The show will be recorded this Saturday in Los Angeles and premieres Monday, Sept. 19—the same night, it should be no surprise to find out, that Two and a Half Men airs its own season premiere, its first without Sheen.